Loudspeaker



FIG. 1 is a perspective view of the loudspeaker;

FIG. 2 is a front view of the loudspeaker;

FIG. 3 is a rear view of the loudspeaker; and,

FIG. 4 is a left side view of the loudspeaker, the top and bottom views being the same and the right side being a mirror image thereof.

The broken lines shown in the drawings represent unclaimed portions of the design and form no part thereof. 

CLAIM The ornamental design for a loudspeaker, as shown and described. 